<template>
  <div class="container">
    <el-breadcrumb>
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item :to="{ path: '/goods' }">商品列表</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert title="添加商品信息" type="info" center show-icon>
      </el-alert>
      <el-steps :active="activeIndex" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-position=" 'top' ">
        <el-tabs :tab-position=" 'left' ">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight"></el-input>
            </el-form-item>
            <span>选择商品分类:</span>
            <el-cascader v-model="selectedKeys" :options="cateList" expand-trigger="hover" :props="casProps" @change="handleChange"></el-cascader>
          </el-tab-pane>
          <el-tab-pane name="1" label="商品参数">商品参数</el-tab-pane>
          <el-tab-pane name="2" label="商品属性">商品属性</el-tab-pane>
          <el-tab-pane name="3" label="商品图片">商品图片</el-tab-pane>
          <el-tab-pane name="4" label="商品内容">商品内容</el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

  </div>
</template>
<script>
export default {
  data() {
    return {
      addForm: {
        goods_name: '',
        goods_price: '',
        goods_number: '',
        goods_weight: ''
      },
      addFormRules: {
        goods_name: [{ required: true, message: '请输入商品名称', trigger: 'blur' }],
        goods_price: [{ required: true, message: '请输入商品价格', trigger: 'blur' }],
        goods_number: [{ required: true, message: '请输入商品数量', trigger: 'blur' }],
        goods_weight: [{ required: true, message: '请输入商品重量', trigger: 'blur' }]
      },
      activeIndex: '0',
      cateList: [],
      casProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      selectedKeys: []
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类失败')
      }
      this.cateList = res.data
    },
    handleChange() {
      if (this.selectedKeys.length === 0) {
        return (this.activeIndex = '0')
      }
    }
  }
}
</script>

<style lang="less" scoped>
.el-step {
  margin: 15px 0;
  font-size: 14px;
}
.el-tab-pane {
  height: 1000px;
  span {
    font-size: 14px;
    margin-right: 10px;
  }
}
</style>
